Commit 45d9ec75 authored by David Engster's avatar David Engster

Update EIEIO documentation.

* eieio.texi (Introduction): Move introductory paragraph about
EIEIO and CLOS from 'Building Classes' to here.
(Documentation): Remove, since eieio-doc is not part of Emacs.
(Class Values, CLOS compatibility): Mention that
`describe-function' will also give information about classes.
parent a5f2a870
2014-01-22 David Engster <deng@randomsample.de>
* eieio.texi (Introduction): Move introductory paragraph about
EIEIO and CLOS from 'Building Classes' to here.
(Documentation): Remove, since eieio-doc is not part of Emacs.
(Class Values, CLOS compatibility): Mention that
`describe-function' will also give information about classes.
2014-01-20 Paul Eggert <eggert@cs.ucla.edu>
* texinfo.tex: Update from gnulib.
......
......@@ -72,7 +72,6 @@ framework for writing object-oriented applications in Emacs.
* Base Classes:: Additional classes you can inherit from.
* Browsing:: Browsing your class lists.
* Class Values:: Displaying information about a class or object.
* Documentation:: Automatically creating texinfo documentation.
* Default Superclass:: The root superclasses.
* Signals:: When you make errors.
* Naming Conventions:: Name your objects in an Emacs friendly way.
......@@ -177,9 +176,17 @@ error. @ref{Signals}.
@node Introduction
@chapter Introduction
Due to restrictions in the Emacs Lisp language, CLOS cannot be
completely supported, and a few functions have been added in place of
setf.
First off, please note that this manual cannot serve as a complete
introduction to object oriented programming and generic functions in
LISP. Although EIEIO is not a complete implementation of the Common
Lisp Object System (CLOS) and also differs from it in several aspects,
it follows the same basic concepts. Therefore, it is highly
recommended to learn those from a textbook or tutorial first,
especially if you only know OOP from languages like C++ or Java. If
on the other hand you are already familiar with CLOS, you should be
aware that @eieio{} does not implement the full CLOS specification and
also differs in some other aspects (@xref{Introduction}, and @ref{CLOS
compatibility}).
@eieio{} supports the following features:
......@@ -211,7 +218,10 @@ Public and private classifications for slots (extensions to CLOS)
Customization support in a class (extension to CLOS)
@end enumerate
Here are some important CLOS features that @eieio{} presently lacks:
Due to restrictions in the Emacs Lisp language, CLOS cannot be
completely supported, and a few functions have been added in place of
setf. Here are some important CLOS features that @eieio{} presently
lacks:
@table @asis
......@@ -247,17 +257,6 @@ should use a deep copy but currently does not.
@node Building Classes
@chapter Building Classes
First off, please note that this manual cannot serve as a complete
introduction to object oriented programming and generic functions in
LISP. Although EIEIO is not a complete CLOS implementation and also
differs from CLOS in several aspects, it follows the same basic
concepts. Therefore, it is highly recommended to learn these from a
textbook or tutorial first, especially if you only know OOP from
languages like C++ or Java. If on the other hand you are already
familiar with CLOS, you should be aware that @eieio{} does not implement
the full CLOS specification and also differs in some other aspects
(@xref{Introduction}, and @ref{CLOS compatibility}).
A @dfn{class} is a definition for organizing data and methods
together. An @eieio{} class has structures similar to the classes
found in other object-oriented (OO) languages.
......@@ -1546,55 +1545,18 @@ comes out upside-down.
@chapter Class Values
Details about any class or object can be retrieved using the function
@code{eieio-describe-class}. Interactively, type in the name of
a class. In a program, pass it a string with the name of a class, a
class symbol, or an object. The resulting buffer will display all slot
names.
Additionally, all methods defined to have functionality on this class is
displayed.
@node Documentation
@chapter Documentation
It is possible to automatically create documentation for your classes in
texinfo format by using the tools in the file @file{eieio-doc.el}
@deffn Command eieiodoc-class class indexstring &optional skiplist
This will start at the current point, and create an indented menu of
all the child classes of, and including @var{class}, but skipping any
classes that might be in @var{skiplist}. It will then create nodes for
all these classes, subsection headings, and indexes.
Each class will be indexed using the texinfo labeled index
@var{indexstring} which is a two letter description.
@xref{New Indices,,,texinfo,Texinfo manual}.
To use this command, the texinfo macro
@example
@@defindex @@var @{ indexstring @}
@end example
@noindent
where @var{indexstring} is replaced with the two letter code.
Next, an inheritance tree will be created listing all parents of that
section's class.
Then, all the slots will be expanded in tables, and described
using the documentation strings from the code. Default values will also
be displayed. Only those slots with @code{:initarg} specified will be
expanded, others will be hidden. If a slot is inherited from a parent,
that slot will also be skipped unless the default value is different.
If there is a change, then the documentation part of the slot will be
replace with an @@xref back to the parent.
This command can only display documentation for classes whose
definitions have been loaded in this Emacs session.
@end deffn
@code{eieio-describe-class}. Interactively, type in the name of a
class. In a program, pass it a string with the name of a class, a
class symbol, or an object. The resulting buffer will display all
slot names. Additionally, all methods defined to have functionality
on this class is displayed.
You can also use the normal @code{describe-function} to retrieve
information about a class. If you call it on a constructor function,
it will also display the class information. If you call it on a
generic function, all implementations of that generic function will be
listet, together with links through which you can directly jump to the
source.
@node Default Superclass
@chapter Default Superclass
......@@ -1903,9 +1865,9 @@ work.
@end table
CLOS supports the @code{describe} command, but @eieio{} only provides
@code{eieio-describe-class}, and @code{eieio-describe-generic}. These
functions are adviced into @code{describe-variable}, and
@code{describe-function}.
@code{eieio-describe-class}, and @code{eieio-describe-generic}. Those
are automatically called by @code{describe-function} when called on a
constructor or generic function.
When creating a new class (@pxref{Building Classes}) there are several
new keywords supported by @eieio{}.
......
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